https://gitlab.freedesktop.org/pipewire/pipewire/-/commit/5212649ee1b9e494ff2a3eb16922a3ef5c6987a5

From 5212649ee1b9e494ff2a3eb16922a3ef5c6987a5 Mon Sep 17 00:00:00 2001
From: Wim Taymans <wtaymans@redhat.com>
Date: Tue, 16 Sep 2025 10:47:12 +0200
Subject: [PATCH] control: fix event compare function

We can only compare UMP when both types are 2 or 4, so it must be
different from 2 *and* 4 to be rejected.

Fixes #4899
---
 pipewire-jack/src/pipewire-jack.c | 4 ++--
 spa/plugins/control/mixer.c       | 4 ++--
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/pipewire-jack/src/pipewire-jack.c b/pipewire-jack/src/pipewire-jack.c
index 2b9d21948a..1867aebae0 100644
--- a/pipewire-jack/src/pipewire-jack.c
+++ b/pipewire-jack/src/pipewire-jack.c
@@ -1513,8 +1513,8 @@ static inline int event_sort(struct spa_pod_control *a, struct spa_pod_control *
 		uint32_t *sa = SPA_POD_BODY(&a->value), *sb = SPA_POD_BODY(&b->value);
 		if (SPA_POD_BODY_SIZE(&a->value) < 4 || SPA_POD_BODY_SIZE(&b->value) < 4)
 			return 0;
-		if ((sa[0] >> 28) != 2 || (sa[0] >> 28) != 4 ||
-		    (sb[0] >> 28) != 2 || (sb[0] >> 28) != 4)
+		if (((sa[0] >> 28) != 2 && (sa[0] >> 28) != 4) ||
+		    ((sb[0] >> 28) != 2 && (sb[0] >> 28) != 4))
 			return 0;
 		return event_compare(sa[0] >> 16, sb[0] >> 16);
 	}
diff --git a/spa/plugins/control/mixer.c b/spa/plugins/control/mixer.c
index cfe3c394b2..feb622435a 100644
--- a/spa/plugins/control/mixer.c
+++ b/spa/plugins/control/mixer.c
@@ -662,8 +662,8 @@ static inline int event_sort(struct spa_pod_control *a, struct spa_pod_control *
 		uint32_t *da = SPA_POD_BODY(&a->value), *db = SPA_POD_BODY(&b->value);
 		if (SPA_POD_BODY_SIZE(&a->value) < 4 || SPA_POD_BODY_SIZE(&b->value) < 4)
 			return 0;
-		if ((da[0] >> 28) != 2 || (da[0] >> 28) != 4 ||
-		    (db[0] >> 28) != 2 || (db[0] >> 28) != 4)
+		if (((da[0] >> 28) != 2 && (da[0] >> 28) != 4) ||
+		    ((db[0] >> 28) != 2 && (db[0] >> 28) != 4))
 			return 0;
 		return event_compare(da[0] >> 16, db[0] >> 16);
 	}
-- 
GitLab
